Improvement in machines for feeding and inserting rivets in boots and shoes



GEORGE V. SHEFFI'ELD.

Machine for Feeding and inserting Rivers in Boos and Shoes,

Patented April 30, i872.

Nok 1261549.

GEORGE v. SHEEEIELD, OE BOSTON, MASSAOHUSETTS,ASS1GNOR To SIM- EON s.OOOK, OE WOONSOOKET, RHODE ISLAND.

IMPROVEMENT IN MACHINES FOR FEEDING AND INSERTING RIVETS IN BOOTS ANDSHES.l

Specification forming part of Letters Patent No. 126,159, dated April30, 1872.

-To all whom it may concern:

Be it known that I, GEORGE V. SHEEFTELD, of Boston, in the county ofSuffolk and State of Massachusetts, have invented a new and usef'ulImprovement in Machines for Feeding and Inserting Rivets in Boots andShoes; and I do hereby declare the following is a full, clear, and exactdescription ofthe same, reference being had to the accompanying drawingand letters of reference marked thereon, making a part of thisspecification, in which- Figure l is a side elevation of my invention.Fig. 2 is a sectional elevation of the same, and Fig. 3, a view of aportion detached.

This invention relates to the attachment of soles to boots and shoes-byrivets, said rivets being driven by atmospheric pressure into oricesmade in the sole 5 and it consists, iirst, of an air-compressingcylinder, having a piston operated by the main driving-shaft, andcommunicating through a bent tube and a pivoted horn with a pointdirectly under a punching-needle or reamer; second, in a hopper orreservoir located on said tube, and communicatin g with the interior ofthe Same, said hopper containing rivets, which are caused by a guidingdevice to fall longitudinally into said tube with their points towardthe upper eX- tremity ofthe same; third, of a plate, pivotedeccentrically on the end of the goose-neck or bent standard, andprovided with ways in which slides a vertical cross-head' containing thepunching instrument, to which latter a vertically-reciprocating motionis imparted by a cam attachment to the main shaft, the same camimparting a lateral motion to the pivoted plate, together with the awlor reamer at the proper time, in such manner as to cause the latter toperform the function of a feed-bar to the work, which rests on the topof the pivoted horn. The details of construction and method 4ofoperation will be more fully described hereinafter.

In the drawing, the frame-work of the machine consists of two bentstandards, D D, which are placed side by side, and connected at thefront and rear by the cross-pieces D1 D2 and e, said frame-work restingon legs E. Between the upper ends of the standards D is a horizontaldriving-shaft, F, which is journaled in the cross-pieces e D2, and isprovided which is pivoted eccentrically'by the screew la,

Fig. 3, to the outer side of cross-piece D2 on the ends of standards D.Said plate is pro- -vided with vertical ways, in which slides across-head, N, which is provided with an awl, reamer, or other punchinginstrument, O. In the center of plate M is a circular orifice, h, intowhich projects the cam a of shaft F, which cam engages with a tooth, j,projecting from the plate M in such manner as to give said plate aslight laterally-vibratin g motion. The plate M is held in place, whennot thus actuated, by a spring, m, and a pin or detent, 1*, which bearsagainstthe lower edge of one ofthe standards D. ,The cam n is providedwith a projecting pin, n', which engages with an elongated transverseslot in the cross-head N, and imparts a vertically-reciprocating motionthereto. o represents an air-compressin g cylinder, located at the rearof standards D, below the disk g. Said cylinder is provided with apiston d, the rod d of which is eccentrically connected by rod i to diskg.

The bottom of cylinder c is provided with a tube or extension, b', whichprojects downward, and opens into the box or cylinder C. This lattercommunicates with a horizontal tube, B, which is bent upward at theopposite end, and is connected to a pivoted horn, L, which is located inthe portion D1 of the framework, and terminates immediately under theawl O. The interior of horn L is provided with an extension of tube B,to which latter it is connected in such manner as to admit of its freerevolution, as shown in Fig. 2. VArepresents a magazine or hopper, whichis located on a collar, b, which embraces tube B and slides freelythereon. The collar b is provided on its upper side with an openin g, f,which corresponds with a similar opening in the ktube B, through whichopenin gs the rivets drop from hopper A. The hopperA is widest at itsupper part, the portion a? being only of sufficient width to allow theshank of an ordinary rivet to pass through it longitudinally. The partal is open at both ends, one end being curved, and provided with a guardor guide, al, which is parallel with the curved edges of part a, thespace between them affording a conrFroE.

d uit for the heads of the rivets, which project laterally, thusinsuring the depositing of the rivets in the tube B in the correctposition-4. e., with their points toward the terminus of the horn L. Thehopper A is provided With an arm, G, which is connected by rod H to thelong arm I.' This latter is provided withaclasp, which surrounds the camK on shaft F, and is operated thereby in such manner as to impart areciprocating motion to hopper A, thus alternately connecting andseparating the openings in collar b and tube B. The tube B and horn Lare so arranged as to be raised or lowered as desired, and may beprovided for that purpose with a treadle, E, as shown in Fig. l. In casethe puncturing instrument O be a ream er, it may be revolved by passinga belt around pulley U.

Operation.

The hopper A is supplied with rivets, and the boot or shoe placed on thehorn with the terminus of the saine against the inner surface ot' thesole. Power is imparted in any suitable manner to the shaft F, the camof which imparts a reciprocating motion to the crosshead N, as abovedescribed, and causes the awl or reamer U to peri'oi'ate the Work on thehorn L. At the saine. moment that this is accomplished, and t-heinstrument O is sufficiently withdrawn to admit of a clear passage fromthe tube B through the newly-made orifice, the air from cylinder c,which is compressed by the downward movement of piston d, drives therivet which has been deposited in the tube B from hopper 'A along saidtube, through horn L, and into the said oritice in the Work, the collarb meanwhile closing the opening in the tube, thus acting as a valve. Thecam n now engages with the tooth or projection j of plate M and swingsthe same downward, as indicated in dotted lines in Fig. 3, thus causingthe instrument O to feed the Work along for the next operation, therebyclosing the mouth of the horn L. Before the next descent of theinstrument O the hopper A is moved along by the cam K, Src., over theorifice in tube B, depositing another rivet therein, and again closingsaid orifice-the parts being so arranged, however, that when the pistond descends the orifices in the tube B and collar b are closed, and whensaid piston is ascending they are open, thus admitting air to fill thelower part of cylinder c. The operation is continued in this manner,each perforation in the work being lled immediately by a rivet, asdescribed, the rivets being subsequently upset or secured by anysuitable means.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

l. The combination of tube B, hopper A, air-compressing cylinder c,feedplate M, and shaft F, all arranged and operating substantially asdescribed.

2. The fred-plate M, pivoted eccentrically, having orifice h, and toothj, and provided with cross-head N and instrument 0, in combination withshaft F, cam n, and pin a', substantially as described.

3. The hopper A, having guiding devices a al a2, substantially asdescribed.

GEORGE V. SHEFFIELD.

Witnesses:

ALBERT Gooif, ,c EDWIN ALDnrcu.

